Make sure we have closed all StoreFileScanners if we fail to open any StoreFileScanners

  public static List<StoreFileScanner> getScannersForStoreFiles(Collection<StoreFile> files,
      boolean cacheBlocks, boolean usePread, boolean isCompaction, boolean canUseDrop,
      ScanQueryMatcher matcher, long readPt, boolean isPrimaryReplica) throws IOException {
    List<StoreFileScanner> scanners = new ArrayList<StoreFileScanner>(files.size());
    List<StoreFile> sorted_files = new ArrayList<>(files);
    Collections.sort(sorted_files, StoreFile.Comparators.SEQ_ID);
    for (int i = 0; i < sorted_files.size(); i++) {
      StoreFile.Reader r = sorted_files.get(i).createReader(canUseDrop);
      r.setReplicaStoreFile(isPrimaryReplica);
      StoreFileScanner scanner = r.getStoreFileScanner(cacheBlocks, usePread, isCompaction, readPt,
        i, matcher != null ? !matcher.hasNullColumnInQuery() : false);
      scanners.add(scanner);
    }
    return scanners;
  }